Microsoft has implemented a policy blocking employee emails containing the words “Palestine,” “Gaza,” or “genocide” on its internal Exchange servers, Drop Site News reported.

According to No Azure for Apartheid, a group of pro-Palestine Microsoft employees, an automated filter silently prevents such emails from reaching recipients.

The filter became effective on Wednesday following Microsoft’s Build developer conference, which faced repeated disruptions by the activist group, Drop Site added.

Microsoft has faced internal dissent from employees upset over the company’s collaboration with the Israeli military in its ongoing war on Palestinians in Gaza, which scholars widely consider genocide.

Employees have protested the company’s provision of cloud services and other critical infrastructure used by the Israeli military.

Microsoft has provided technology to the Israeli army, “offering them tailored proposals and significant discounts on cloud and AI services. These deals, negotiated and escalated over months, positioned Microsoft as a key technology provider during Israeli military operations in Gaza,” Drop Site wrote, based on a review of internal company documents.